Braiding-carrier



UNITED STATES PATENT OFFICE.-

HERMAN sTAUB, or WYOMISSING, PENNSYLVANIA, ASSIGNOR TO TEXTILE MACHINEWORKS, or WYOMISSING, PENNSYLVANIA, A ooRPoRA'rmNoF PENNSYLVANIA.

BRAIDING-CARRIER.

Specification of Letters Patent.

Patented N v. 30, 1920.

To all whom it may concern:

Be it known that I, HERMAN STAUB, a citizen of the United States,residing at Wyomissing, in the county of Berks and State of'Pennsylvania, have invented certain new and useful Improvements 4 inBraidin -Carriers,-

, of which the following is a speci cation.

My invention relates to braiding carriers adapted more particularly forsingle-thread lace-braiding machines and is fully described inconnection with the accompanying drawings, the novel features beingspecifically pointed out in the claims.

Figure 1 is a central longitudinal section of a complete carrierembodying my improvements in preferred form.

Fig. 2 is an enlarged elevation of the tubu: lar extension of the bobbinstandard looking at right angles to the Fig. 1 view thereof.

Fig. 3 is a plan view of same.

Fig. 4 is a partial longitudinal section of the extension showing thetop portion of the spring with cap thereon.

Fig. 5 is a cross-sectional view of same. i

Fig. 6 is an elevation showing the lower portion of the carrier withthevstop sleeve in dropped position thereon.

The type of carrier indicated comprises a base portion 10 guided in therace-way plate 11 of the machine, and having a tubular bobbin standardwith a thread-tension-- ing spring 12 therein arranged to release abobbin-engaging" pawl 13. My invention" provides an improvedconstruction and ad-v vantageous operation of the carrier as here--inafter fully described. I

As shown the base portion 10 is formed with an integral tubular standardportion 15 of circular cross-section; and an upward extension of thisstandard is provided by a separate tubin having its lower portion 16snugly inserte in the fixed standard 15. A pawl-supporting bracket 17rigidly secured to this extension forms a supporting shelf 18 thereonwhich bears upon the top of the fixed standard 15, and the bobbin 19inclosing the standard extension rests upon said shelf,

with an intervening distance sleeve20 as required to properly positionthe pawl-engag-' ing top of any desired length of bobbin. The top of thebobbin standard extension is provided with a thread-guide eye 21, andthe thread passes to said eye from the bobbin through guide eyes 22, 23,24, in the pawl bracket and pawl respectively, engaging a top eye 25 ofthe spring 12 so as to be tenl cross-section from the cylindrical partthereof which is engaged in the fixed standard 15; it being of squarecross-section as indicated in Fig. 5 in the portion 30 inclosing thespring 12, with a side wall cut away in the upper portion 81 thereof toprovide passage way for the thread, and with the top portion 32 closedupon the porcelain guide eye 21. The spring 12 is provided with a threadcap 35 having a cross-section at 36 conforming with that of the angularstandard extension 30, so as to be non-rotatable in the latter thoughloosely slidable therein.

The lower end of the spring 12 is provided with a loop 38, which isengaged by a crosspin 39 extendin through longitudinal slots 40 in thetop 0% the fixed standard 15 and connected to the stop sleeve 41 on thelatter;

so that said end of the spring will also be held at all times againstrotative action, with the sleeve free to drop upon any breaking of thethread. Thepawl bracket shelf 18 is formed with 2. depending offset oroflsets 42 engaging the slots 40 so as to positively prevent any turningmovement upon the fixed standard.

Important operating advantages result from the positive prevention ofspring turning movement which my improved construction provides for. Therapid stretching and contracting of the spring under varying threadtensions I have found to ordinarily produce turning movements of thethread connected end of the spring sufficient to bring the normallyapproximately parallel portions of the thread into rubbing contact withresulting wear and liability of breakage; and a main purpose and resultof my invention is to avoid these effects by positively restricting suchturning movement of the thread connected end of the spring as set forth.The improved connection of the lower end of the spring also reducesobjectionable. wear and tear ordinarily incident to this turning actionof thevariably tensioned spring. A further practical difiiculty largelyovercome by my improved construction is clogging of the spring action byaccumulation of lint rubbed from the passing thread; the amount of suchlint being not only reduced by avoidance of rubbing action,

but the spring cap 35 being also adapted to permit the passage of lintclose to the Wall of the standard extension and practically a clear ofthe spring coil, into the spaces below the spring, from .Which it may bereadily re: moved at intervals.

lVhat I claim is 1. A braiding carrier comprising a base portion havinga tubular standard provided with a bobbin-supporting bracket, aspringguide portion of angular cross-section, and a thread-guide topportion; a thread tensioning spring having a cap of angular crosssectionnon-rotatably slidable Within said spring-guide portio n, and a stopsleeve nonrotatably slidable on the standard below said bracket andconnected to the lower end of said spring.

2. In a braiding carrier comprising a base portion having a tubularbobbin standard provided with a thread-guide top portion and aspring-guide portion of angular crosssection; a stop devicenon-rotatably slidable on the lower portion of said standard and athread-carried tensioning spring connected at its lower end to saidnon-rotatable slide stop and having a cap of angular crosssectionloosely slidable in said guide-portion of the standard.

In testimony whereof I afiix my signature.

HERMAN STAUB.

